Systems for performing a network scan of one or more targets are provided. The systems select, from functions related to performing a network scan of a target, a first group of functions that are ready to execute at a first time. The first group of functions may be executed by a distributed computing system in parallel to generate first and second results. A third function may then be identified as ready to execute based on the first result, and a fourth function may be excluded from the network scan based on the second result.